Puzzles
A Collection of Quant Riddles
[ http://puzzles.nigelcoldwell.co.uk/ ]
Offers a selection of riddles both logical and lateral with the answers.
FindTheWord.info
[ http://www.findtheword.info/ ]
Searches for partial words (both crossword solver and part of word), anagrams, palindromes, words in word, and more.
Lovatts Publishing Group
[ http://www.lovatts.com.au/ ]
Australia and New Zealand's leading crossword and puzzle company.
OnlyRiddles.com
[ http://www.onlyriddles.com/ ]
Large database of riddles that can be searched. Has an RSS feed for updates and users can submit suggestions.